<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
	just a test
	<input id="click" type="button" value="点击" />
<script type="text/javascript" src="http://code.jquery.com/jquery-1.11.1.min.js"></script>
<script>
    if(!window.jQuery){
    	alert("a");
    	document.write('<script type="text/javascript" async="async" src="static/js/2.1.1/jquery.min.js"><'+'/script>');
    }
</script>	
<script type="text/javascript">
jQuery(function() { 
    jQuery("#click").click(function() { 
        jQuery.ajax( { 
            type : "GET", 
            url : "getJSONList", 
            data : "name=iphone&img_src=static/imgs/june.png", 
            dataType: "text", 
            success : function(msg) { 
                alert(msg); 
            } 
        }); 
    }); 
}); 
</script>
</body>
</html>